Samsung 49″ TV – UE49NU7172U – For Parts/Repair
- A used Samsung UE49NU7172U television is being offered for sale with a noted issue: the LED backlights require replacement.
- The UE49NU7172U is a 49-inch UHD (Ultra High Definition) television released as part of Samsung’s NU7172 series.
- The need for backlight replacement is a common issue in LCD televisions as they age.
A used Samsung UE49NU7172U television is being offered for sale with a noted issue: the LED backlights require replacement. Despite this, the seller states the television functions perfectly otherwise and includes the remote control.
The UE49NU7172U is a 49-inch UHD (Ultra High Definition) television released as part of Samsung’s NU7172 series. These models, including the 55-inch (UE55NU7172U), 58-inch (UE58NU7172U), 65-inch (UE65NU7172U), and 75-inch (UE75NU7172U) variants, share a common chassis and core functionality. The series represents a mid-range offering in Samsung’s lineup, balancing features and price.
Understanding the Backlight Issue and Potential Repair
The need for backlight replacement is a common issue in LCD televisions as they age. LCDs (Liquid Crystal Displays) themselves do not emit light; they rely on a separate backlight source to illuminate the image. LED (Light Emitting Diode) backlights are the standard in modern televisions due to their efficiency and relatively long lifespan. However, LEDs can fail over time, leading to symptoms like a dim picture, uneven brightness, or complete loss of image.
The UE49NU7172U, like many Samsung UHD TVs, utilizes a direct-lit LED backlight system. This means the LEDs are arranged directly behind the LCD panel. While simpler and more cost-effective than edge-lit or full-array local dimming systems, direct-lit backlights can sometimes exhibit less uniform brightness. A failure in one or more LEDs will directly impact the picture quality.
Replacing the LED backlight can range in complexity. The service manual for the UE49NU7172U (and related models) is available online, providing detailed instructions for disassembly and component replacement. However, it’s a task best left to experienced technicians due to the delicate nature of the LCD panel and the potential for further damage during the repair process. Attempting a DIY repair without the proper tools and knowledge could void any remaining warranty and potentially render the television unusable.
Components and Replacement Parts
Several components within the UE49NU7172U could be related to the backlight issue. The power supply board (model BN44-00932C, as seen on eBay listings) is a critical component, providing the necessary voltage to the LEDs. A faulty power supply can cause the LEDs to flicker, dim, or fail entirely. Other potential failure points include the LED strips themselves and the associated control circuitry.
Genuine Samsung replacement parts are available through authorized retailers like SamsungParts.com. These include LED strips, power boards, and other internal components. The availability of parts suggests that repair is a viable option, although the cost of parts and labor should be considered against the price of a new television. Remote controls (various models like BN59-01385A, BN59-01391A, BN59-01296A, and others) are also readily available, but the listing specifically notes the included remote with the used TV.
The UWX80 Chassis and Service Information
The UE49NU7172U utilizes the UWX80 chassis. This chassis designation is important for identifying compatible parts and accessing specific service information. The Scribd document referencing the chassis provides a service manual, which is invaluable for technicians diagnosing and repairing issues with the television. The service manual details the internal layout, component locations, and troubleshooting procedures.
Considerations for Buyers
For potential buyers of this used UE49NU7172U, the cost of backlight replacement is a crucial factor. A new power supply board, for example, can cost around $227.95 (as listed on SamsungParts.com), and the LED strips themselves will add to the expense. Labor costs for a professional repair will vary depending on the technician and location. It’s essential to obtain a quote for the repair before purchasing the television to determine if it’s a financially sound investment.
The television is being sold from Vilnius, Lithuania, and international shipping will incur additional costs, including potential customs duties and brokerage fees. Buyers should be aware of these potential expenses before making a purchase. The seller does not accept returns, further emphasizing the importance of due diligence before buying.
Samsung’s NU7172 Series Context
The NU7172 series, released in , represented Samsung’s entry-level 4K UHD offerings. These televisions typically featured a 60Hz refresh rate, HDR (High Dynamic Range) support, and Samsung’s Smart TV platform. While not equipped with advanced features like full-array local dimming or wide color gamut, they provided a relatively affordable way to experience 4K content. The series was positioned to compete with other mid-range 4K televisions from brands like LG, Sony, and TCL.
The availability of service manuals and replacement parts, even several years after its release, demonstrates Samsung’s commitment to supporting its products. However, as with all electronic devices, the lifespan of a television is finite, and component failures are inevitable. The decision to repair or replace a television with a known issue ultimately depends on the cost of repair, the age of the device, and the buyer’s individual needs and preferences.